sPHENIX is a new detector at RHIC.

[Anthony Frawley <afrawley AT fsu.edu>]

Hi All,

Here are my (somewhat raw) notes from this morning's discussion about organization of the tracking work in the January workfest.

Cheers

Tony

December 18, 2019

--------------------------

Organize tutorials over Bluejeans for newbies the week before.

  Fun4All - build analysis module from scratch

  Go over Fun4All concepts

  Loop over tracks, calo clusters, jet finding, .... from DST

  Have them follow wiki tutorials first

  Doodle poll - Jin - 3 hours Tuesday, Wednesday or Friday

Salzburger limited Monday, Wednesday morning:

  General intro: Monday morning

  Wednesday: more detailed

  ACTS tutorial - vertexing initial, secondary, Kalman propagation

Interfaces: clusters and surfaces => measurements => ACTS

HPC group leader available Tuesday and Wednesday, plus an expert

  Wednesday afternoon - presentation + discussion of what they can do

Monday evening organization meeting to assign people to tasks

 

TPC space charge distortion

  Ross Corliss, Ernst Helbaer, Jens Wichula

Tracking calibration and infrastructure

  Infrastructure to determine and correct SC distortions

  More mundane TPC calibrations - alignment, drift velocity, gains, etc.

  Drift velocity determination from tracks? Understand why ALICE does this.

  Variations in drift speed vs time window for TPC readout

  David Rohr, Jens Wichula, Christof Roland, Yasser Corales

Outer detector studies

  Longer term: Connected to TPC SC distortions through fast simulator

     Start with fluctuation timescale

  Hugo Pereira

Data compression, DST format, analysis format, DB integration - David Rohr, Chris Pinkenburg, Jens Wichula

  Also HPC group can be involved? - work on speeding up code? Clustering with neural networks? GPU's?

  Discuss GPU's with David Rohr - Friday?

  Have HPC group profile our code and think about how to optimize it?

Tracking development, geometry implementation

  Seeding - cellular automaton - David Rorh - separate from ACTS

  Kalman propagation: simplified Kalman filter - David Rohr -independent of ACTS - faster than full Kalman filter

  ACTS also has similar propagator - use for comparison

  ACTS for full track fitting

  Prep:

    Chris dump a list of packages we link.

    Interface modules needed:

      CA seeding

      Simplified track propagation

      ACTS track propagation and track fitting

MVTX Vertexing

  Sanghoon Lim, Cameron Dean?, Tony Frawley

KF particle - Ivan Kisel, Xin Dong - topological analysis of resonances

  Jin and Xin will work on

  Ivan Kisel also has Kalman Filter that is very fast - non open source at present - hard to integrate

Tracking development people:  Christof Roland, David Rohr, Andreas Salzburger, Ivan Kisel, Tony Frawley, Jin Huang, Yasser Corales

 

QA module

  Jin and a newbie